Yes, that’s the folder structure for a Blu-ray (or AVCHD) disc.
The next step is to make sure both BDMV and CERTIFICATE are in a main folder (make one if you need to, e.g. ‘Star Wars DeEd’).
When you open ImgBurn, use the ‘Write files/folders to disc’ option. Then select that main folder to burn - ImgBurn will know from the structure that it’s meant to be a playable disc.